Improved feed for g-rinding-mills



dotted" gums @sind liti-rr.

Letters Patent No. 95,829, dated October 12, 1,869.

nazpnovnn FEED ron @BINDING-MILLS.

The Schedule referred to :in these ALetters Patent and making pari: ofthe same.

To all whom tt may concerne Be it known that I, GEORGE Banken, ofPoughkeepsie, in the county of Dutchess, and State of 'N ew York, haveinvented anew and useful Machine'forFee/ding Flour and other similarsubstances; and I do hereby declare that the following is a full andexact descriptionv of the same, reference being had to the accompanyingdrawings, and.to the letters of reference marked thereon.

This invention consists of a machine of novel construction, which isintended forl use in feeding our and other similar substances to thestone of a grinding-mill, when it is desired to grind over or mix thesaid substance with grain which is in the processv of being ground.

Its novelty consists, A

First, in the construction and arrangement of the valve, by means ofwhich the delivery of the substance is regulated.

Second, in the employment of a chamber above the valve, in whichthe`great bulk of the substance to be mixed is held, and its weightthereby prevented from lbearing upon the couveyers.

It further consists also in certain details of construction, and thegeneral combination and arrangementof the various parts. s

To enable others skilled in the art to which my invention appertains, tomake and use the same, I will now proceed to describe fully itsconstruction and operation.

A represents a circular base, supported upon the legs a a a, which isprovided with an crice, a', and step A' beneath it, in which latterrests the lower end of the shaft B, as. shown. This base has also one ormore suitable openings, covered with wire screens, through which thesubstance to be mixed isdischarged into any suitablel spout-arrangementconnecting with the eye of the stone.

The shaft B has its upper bearing in the circular plate C', as shown,and is provided at its extreme end withthe pulley b.

C and D represent cone-shaped chambers, the apexes of which are unitedby the centre-piece'E, which flares in both directions to receive them,as shown in fig. 1.

Upon the lower end of the shaft B are placed the arms F, which form theconveyers. They are arranged at an angle to each other, and are unitedin the centre by a cone-shaped hub'or block, f.

Underneath these arms the brushes F are attached, as shown in g. 2. I

Upon the shaft Bis also located the valve G. This valve is attached tothe shaft in such a manner as to move freely perpendicularly, whileat'the same time it is compelled to revolve with the shaft.

It is constructed with a circular groove about its lower part, in whichthe lingers h h of the adjustinglever II rest.

The upper part of the valve is cone-shaped, and is cut spirally, asshown.

The lever H has its -fulcrum in suitable bearings /upon the piece E,which is slotted to admit itsentrance therein, and it is provided with aslotted plate and set-screw', in order that it may be firmly held at anydesired point.

The valve is s located upon the shaft that when the lever H is'raised,its consequent depression closes the opening Abetween the two chambers.By adjusting the lever suitably, the supply is regulated at will.

I I represent stirrers, which consist of dat arms obliquely placed uponthe shaft B, as shown.

J J J represent rods, by which the machine is sel curely held together.

The operation of my machine is as follows:

The flour or other substance to be mixed with the grain being ground, isplaced in the chamber I).

If desired, the latter may be connected by a spout or other suitablemeans, directly to the bin. The valve should then be adjusted at theproper point to permit the delivery of the desired quantity. The machinenow being set in motion, the flour will be delivered through thedischarge-orifices ina constant, regular flow.

The stirrers serve to agitate the contents of the chamber and preventtheir clogging, and also to break up any lumps which may have formed.

The spirally-cut cone of the yalve, hyits rapid revy olution, produces astrong downward draught, which materially facilitates the movement ofthe flour. This cone may be constructed separately from the valve ifdesired, but the arrangement shown is believed to be the best.

As'the flour enters the lower chamber C, it falls upon the cone f, andisv equally distributed about the chamber. The conveyers, by theirrevolution, also assist in making a draught, and sweep the our, as fastas received, tothe orilce where it is discharged.

The machine itselfshould'be located above the stone, so that the `flourmay fall thereto by its own weight. It may be made of any desired size,.but one about the sizeof a flour-barrel will belarge enough forordinary use.

The ordinary method of feeding the ilour to the stone for such purposeshas been to use a scoop. This method not only requires the constantservices of a laborer, but the supply must necessarily. bc more or lessirregularly furnished, and consequently the mixture is unevenly made.

My machine requires no care after having lbeen properly adjusted, andthe delivery is uniform in quantity.

By the employment of an upper chamber in which the bulk of the substanceto be mixed is kept, the eonveyersare lrelieved from the excessiveweight which must otherwise rest upon them, and the machine canconsequently be run with much less power.

Having thus fully described my invention,

\Vhat I claim as new, and desire to secure by 'Letters Patent, is

1. The cone-shaped valve G, spirally cnt, as and for y the purpose setfoith.

2. The chamber C, provided with any suitable valvearrangement, incombination with the chamber D

